The book "Emotional Intelligence as Predictor of Performance" by Nurul-Azza Abdullah provides a comprehensive analysis of the role of emotional intelligence (EI) and organizational citizenship behavior (OCB) in relation to employee performance. In recent decades, EI has become a central topic in human resource development and training at business schools. Despite the growing interest in EI, the exact relationship between emotional intelligence and performance in task areas remains unclear. This book examines how EI and OCB influence work performance, with employee engagement (OC) considered as a moderating factor. The research findings show a promising data fit that highlights the interactions between EI, OCB, and OC. This study aims to further explore the significance of these concepts for organizational effectiveness and offers valuable insights for leaders and HR professionals.